Since I can't do a poll, I'm just gonna do a vs. Post. I just wanna say, I prefer Quicksilver as an X-Man than an Avenger, Since that was his original intention.
Quicksilver Skill Set/Feats: Can Phase through any material except Vibranium, Can Run Faster than the speed of Light, Got to San Francisco from New York in a matter of Seconds, Can Slow Down Time but only when he wants to, Can Generate White Lightning Bolts from his hands if he is fast enough, Can make Miniature tornados by waving his hands around at Super Sonic speeds.
Speed Demon Skill Set/Feats: Can Duplacate Himself, Won a Street Race against the Fastest Car in the world, Ran 600 miles in Nano-Seconds with 2 full bags of Gold bars and Money, Ran Up a whole Can Cross the Pacific Ocean from Japan to Canada in Approxiamtely 1 minute, 43 Seconds.
It was a Bueatiful day in the city of San Francisco, where the Beloved X-Man, Peter Maximoff A.K.A Quicksilver was taking a break from the Mansion and Heroic Acts. "I'll take a.... Number 4.....Wait No!" Said the Indecisive Customer in front of Peter. "Uggghh" suddenly time stopped as Peter ran into the kitchen, Preparing a meal so fast the chefs didn't even know he was there. He put in a bag. "Knew reading those cook books The Professor had would be good for something!" Peter said optimistically. Sluuurp. Peter Drank his Cola and ate his Burger rather quickly. After a good meal, Peter thought he should just Chill in his Apartment And play video games all day, Until KABOOOM! A near By Bank burst Open revealing the Speedy Super-Villain, Speed Demon! Peter rushed In his apartment than back out in his Super Hero Attire. Now Quicksilver, He caught up to Speed Demon fast. "Ya Know, it's not nice to Interrupt someone's Vacation. Especially in a wonderful city Like Good ol' SF" Quicksilver said while Racing Speed Demon, To the human eye their just Orange, Blue, and Silver streaks, But to the average speedster, They're the real deal. "Goddammit! Go to San Francisco He said! No Heroes there! He said! Damn you, Boomerang!" Speed Demon said while swinging bags of money at Quicksilver. The two raced throughout San Francisco, Hitting one another with blows not powerful enough to stop one in their tracks. Until Quicksilver was able to tackle Speed Demon on the Golden Gate bridge, Then time seemed to slow down. "Now this is my kind of party" Speed Demon said Manically. "Whatever parties you go to, Explains all the Mental Issues you have." Maximoff Said, Chuckling. And then Quicksilver got Kneed in the Stomach! Quicksilver clutching it, But Swiftly recovering! The two started to Brawl on the Golden Gate bridge! Then the streets! Than on top of a Office building! Than on the streets all in a blue of Orange, Blue, Teal and Silver! Speed Demon was punching left and right, Quicksilver barely dodging every blow, Until He had his moment. KRRRK! "AAAAAAGGGGGAGGGHHHH!!!!!!" Quicksilver had Broke his ankles. Then one swift punch in the face knocked the Villain out. Quicksilver took a moment to catch his breath. He then sat in the street. Time moved regularly again so the paparazzi Came quick. The young hero just waved them off and at the speed of light was in his Apartment napping. The S.F.P.D took Speed Demon, and locked him in a maximum security prison, and A special Cell. One where he can't phase. He won't be getting out in awhile.